knownTargets = []string{
		kubeadmconstants.Etcd,
		kubeadmconstants.KubeAPIServer,
		kubeadmconstants.KubeControllerManager,
		kubeadmconstants.KubeScheduler,
		KubeletConfiguration,
		CoreDNSDeployment,
	}
)

// KnownTargets returns the locally defined knownTargets.
func KnownTargets() []string {
	return knownTargets
}

func applyKubeletConfigPatches(kubeletBytes []byte, patchesDir string, output io.Writer) ([]byte, error) {
	patchManager, err := patches.GetPatchManagerForPath(patchesDir, patches.KnownTargets(), output)
	if err != nil {
		return nil, err
	}

	patchTarget := &patches.PatchTarget{
		Name:                      patches.KubeletConfiguration,

	if err != nil {
		return pod, errors.Wrapf(err, "failed to marshal Pod manifest to YAML")
	}

	patchManager, err := patches.GetPatchManagerForPath(patchesDir, patches.KnownTargets(), output)
	if err != nil {
		return pod, err
	}

	patchTarget := &patches.PatchTarget{
		Name:                      pod.Name,
		StrategicMergePatchObject: v1.Pod{},

func applyCoreDNSDeploymentPatches(coreDNSDeploymentBytes []byte, patchesDir string, output io.Writer) ([]byte, error) {
	patchManager, err := patches.GetPatchManagerForPath(patchesDir, patches.KnownTargets(), output)
	if err != nil {
		return nil, err
	}

	patchTarget := &patches.PatchTarget{
		Name:                      patches.CoreDNSDeployment,
		StrategicMergePatchObject: apps.Deployment{},